Electrical condenser



A n 7, 1953 w. M, ALLISoN ET AL 2,634,315

BLEcTRICAL cONDBNSER Fied Nov. 29. 1951 The heat and pfeSSufe lf1oldedtheffnoSettin resin en1ployed for caSing 23 of igufe 3 iS pfef efably aphenol, fnelaff1if1eof ufe-foffn31de hyde tyoe oondenSoffon fesin. heuSe of nfolded feSin oasif1gS foffns one of the pTefeffed en1booi n1entSof the invention, aS hefofofofe ft Was dif fioolt to pl'ovide SuohoaSif1gs obout high voltage oondenSefs Wifhout, fo1, fhe Sake of Safety,gfeof fy iflofeasing the Winoing SiZe The two Shoftef foi1S arepfefefably of appfox 1IlaJtely the Sanle length. It is posSible,howevef, fo elffploy different1engths.

f fs fflany f ioely diffefent eoobodilnentS of thiS invenfion fflay befflade vithoL1t depafting ffom the Spifit and soope thereof, it is to beundef- Stood that the invention iS not lin1ited to the Specificen1bodifnentS hefeof except aS dened in the appended olaifns.

This application iS a continuation in paft of ou1 oopending applioatio11Sefial 1`To. 57 36, ffled ootobef 30, 198, now abandoned.

vvhat iS claimed iS= 1. boffer oondenSef unit oompfiSing tWo shoft, Wideeleotfode foils and one long, norrow electfode foil oonvolutely voundvvith and sepafated ffom each ofher by dielectTio Spaoing n1a tefial,the long foi1 being ooInpletely oovefed by SaJid spaoing InateriaL oneof Said Shoft foils overlapping Said long foi1 ovef an innef poftion ofthe Winding one edge only of Said Shoft foi1 extenoing beyond saidspacing InateriaL on one side of the vvinding, the othef of Said Shoftfoils overlapping Said long foil ove1' an outef poftion of the winding,one edge only of said othef Shoft foi1 extending beyond Said spaoingn1atefio1 on the opposife side of the Winding, said oveflapped poftionsbeing Spaoed by about one oonlplete t11fn of the long foi1, andterfninals oonnected to the extended edges of eaoh of the shoft foils,the tef 1T1inaloonnected to the extended end of the shoff foi1 vvhich iSat the outer end of the winding being a tubular electrically oonductiveeyelet pfoviding al tefIf1iflo1 oonneotion LS vve11 aS a paSSageway fofdrying and in1pregnating the winding, the winding and of least part ofthe eyelet being sealed if1 an in1perviouS n1olded fesiI1 oasing.

2. A buffer oondenSef unit ooropriSing tWo short, Wide e1eotrode foilSand one long, narrow eleoffode foi1 oonvolutely Wound vvith and Sepafated ffom eaoh othe1' by dieleotfio Spoing fnate fia1, the long foi1being oofnpletely oovefed by said spaoing fnaterial, one of said Shoftfoils ovef- 1apping sid long foi1 ovef an inne1, portion of the Winding,one edge only of said Shoft foil ex tending beyond said spacingInatefia1, on one side of the vvinding, the othef of Said Shoft fof1Sovef lopping Soid long foi1 oveT an oufer portion of the Winding, oneedge only of soid other Shoft foi1 extending beyono. said spaoif1gfflateria1 on the opposite Side of the vinding, Said oveflapped poftions being Spaced by about one cofflplete turn of the 1ong foiL andteTIninals oonnected to the extended edges of each of the shoft foilS,the tefInina1 oonneoted to the extended end of the Shoft foilvvf1icf1iSof the outef end of the Winding 66 Numbef be1g a tubulaf eleotfioollyoonduotive eyelef pfoviding aJ tefofinal oonoeotfon aS Welf aS o paSSageway fof drying and infpregnating the winding.

3 buffef oondenSef unit oon1pfiSing tWo Shoff, Wide efeoffode foils andone long, naffow eleoffode foil oonvolutely Wound With and Sepa fafedffo1 eaoh ofher by dieleotfio Spocing fnate fial, the long fo beingoonfpletely covefed by said Spacin fnatefial, one of Said Short foflSoveflapping sod long fofl ovef an innef poftion of t11e winding, oneedge only of Said Shoft fofI exfending beyond oaid spaoing nlateTiaL onone Side of fhe Windiog, the othef of Soid shoft foilS oveflapping Saidlong foi1 over an ollter poffion of the Winding, one edge only of Saidothef Short foil extending beyond soid spaofI1g InateTia1 on theoppoSife side of the Winding, Said oveflapped poffionS being spaoedffon1 eaoh other longit11- dinally of the long foi1, and tefIninalSconnecfed to the extended edgeS of each of the shoft foi15, thetefInina1 connected to the extended end of the shoft foi1 Whioh iS atthe outer end of the vinding being a tubulaf electfically oonduotiveeyelet pfovidin a tefn1inal conneotion aS We11 as oJ paSSageway fordrying and inlpregnating the winding, the Winding and at leaSt part ofthe eyelet being Sealed in aT1in1perviouS no1ded resin oaSing A bt1ff'efoondenSef unit oonlpriSing tvo shoft, Wide eleoffode foilS and one long,nafrow eleotrode foil oonvolutely Wound With and Sepa fated ffom eaohothef by dieleotfio spaoing matefia 1, the long fo1 being con1pletelooveTed by Said Spaoing fflateffal, one of said Shoft foils ovef-1apping Said long foi1 ove1' an inne1' poftion of the Winding, one edgeonly of Said Shoft foi1 ex tending beyond Said SpaCg nlatefia1, on oneSide of the winding, the othef of said shoff foils overlapping said longfoi1 over an outer poftion of the winding, one edge only of Said othe1-shoft foi1 extending beyond Said Spaoing nlateria1 on the opposite Sideof the Winding, Said overlapped poftions being Spaced fron1 each othef1ongitu dinally of fhe long foiL and terIninals oonnected to theextended edges of each of the Shoft foilS, the tefn1inal oonnected tothe extended end of the shoft foi1 Whioh iS at the outer end of thevvinding being a tubulaf eleotfically oonduotive eyelet providing otern1ina1 conneotion aS We11 as a paSSageWay for dTyin and in1pfegnatingthe winding.

vVILLIAM ALLISON. PAUL H. NETHEBvvOOD.

BEFEBENoES oIToD The following feferenceS are of record in the ffle ofthis paltent= UNITBD STATES PTNTS N afne Date Fickfd Jan. 19, 1932 GivenMay 7, 1935 country 1)ate Gfeat Bfitain ug. 21, 1930

